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縫衣針
Author:
陳隆期
GeoGebra
New Resources
兩位數除以一位數（二）
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
錐體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
正十二面體
Mobius strip
S2 ch2.3 simultaneous equation
畢氏定理
S408 Penrose 階梯
Discover Topics
Polynomial Functions
Difference and Slope
Conic Sections
Arithmetic Operations
Straight Lines